S
M
T
W
T
F
S
30
91°
63°
31
90°
66°
1
96°
71°
2
93°
70°
3
95°
70°
4
93°
68°
5
86°
68°
6
79°
55°
7
82°
54°
8
86°
59°
9
90°
68°
10
81°
68°
11
81°
63°
12
81°
64°
13
88°
63°
14
73°
52°
15
86°
50°
16
91°
70°
17
89°
70°
18
79°
64°
19
86°
68°
20
84°
66°
21
82°
62°
22
79°
60°
23
77°
58°
24
76°
55°
25
78°
52°
26
78°
54°
27
78°
55°
28
79°
56°
29
80°
48°
30
78°
55°
1
77°
54°
2
73°
53°
3
69°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Latham
Latham's September 2026 forecast shows daily high temperatures ranging from 69° to 91°, with overnight lows between 48° and 70°. The average high for September is 80° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Latham. See also: October | November | December.
